精馏

The status of VCM and acetylene gas recovery by pressure swing adsorption in vinyl chloride production units were introduced.

介绍了在氯乙烯生产装置中，采用变压吸附工艺回收精馏尾气中的VCM和乙炔气的情况。

Apply ITCDC from moderate-purity to high-purity system in order to meet the request of air separation.

对高纯内部热耦合精馏塔的动态特性进行了定量定性的详细分析。

With Ammonia as refrigerant and water as absorbent, they are boiled by the heater in the generator, as a result, the Ammonia-water solution is evaporated. The Ammonia vapor is purified by the rectifier and is condensed into liquid Ammonia in condenser. The liquid Ammonia and the pure Helium purified in the absorber are evaporated together in the evaporator and to absorb heat thus refrigerate at the same time.

采用氨为制冷剂，水为吸收剂，通过对制冷机芯的发生器加热，使氨水溶液中的氨蒸发，氨蒸汽经精馏器提纯后进入冷凝器成液氨，液氨在蒸发器中与经吸收器提纯的纯氦共同蒸发，同时从外部吸收热量，达到制冷的目的。

The fitted dynamics model parameters are as following:In order to apply the reaction distillation technology in more fields, the methylbenzene side-chain photo-chlorination has been done in the experiment apparatus. The results have proven this technology is feasible and crude benzyl chloride with a purity of 96~98% can be obtained.

估计得到的动力学模型为：为扩大背包式反应精馏耦合工艺的应用范围，在所建立的实验装置上，进行了甲苯侧链光氯化反应的研究，结果表明工艺可行，可以得到含量96～98％的氯化苄粗品。

It can be concluded that the design results of this paper fit close with results of other literatures, and can maintain low energy consummation at the same time, furthermore the method have advantage of using simply , so it can be used to design RD process.

结果表明，本文设计结果同文献结果吻合很好，且具有适应性强，使用简单等优点，可用于反应精馏过程的概念设计。

Extractive distillation and liquid-liquid extraction are effective separation processes to deal with the separation of close boiling compounds or azeotropes systems. The selection of appropriate solvents is the key.

化工生产中常遇到欲分离组分之间的相对挥发度接近1或形成共沸物的难分离物系，萃取精馏和液液萃取是常用且有效的方法，其中萃取剂的选择是关键。

For example, in order to generate an economically viable amount of biodiesel product, a conventional biodiesel plant contains large, batch-type reactors, large separation units (eg, decanters, centrifuges, clarifiers), and distillation columns as tall as 50 to 200 feet or more.

例如，为了产生一种经济上可行的生物柴油生产量，传统的生物柴油厂包含大，批次型反应堆，大型分离单位（例如，倾析器，离心分离，澄清池），并精馏塔一样高50至200英尺或更多。

Third, the flow direction and structure of membrane contactors were paid more attention to enhance separation.

与材料化学一样，膜接触器运行方式和结构参数的选择对精馏分离效能的提高也非常重要。

After the activated carbon adsorbing VCM from rectified tail gas, the composition of this desorbed gas was introduced.

介绍了精馏尾气经活性炭吸附氯乙烯后，解吸气体的组分。

The liquid distils finely is one of the important components and the difficult point of chemical engi- neering principle,Base on analyzing the difficult points in teaching,procedures of the liquid distils finely,the teaching plans ,the learning target and the application of the medium in teaching procedures is assurance in this paper.

文章分析了液体精馏的教学难点，在此基础上，确定了教学目标、教学策略及教学过程中媒体的选择等，并给出了教学设计方案。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。